<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>canvas绘制圆形</title>
    <script type="text/javascript" src = "../js/canvas绘制圆形.js"></script>
    <style type="text/css">
        body{
            margin: 0;
            padding: 0;
        }
    </style>
</head>
<body onload="draw('canvas')">
    <canvas id="canvas" width="400" height="400"></canvas>
</body>
</html>